Utilization of waste plastics

1, the direct use of waste plastics

The direct use of waste plastic is not necessary to carry out all kinds of modification, the waste plastics after washing, crushing, plastic, direct processing, or with other materials by simple processing into useful products. In the domestic and foreign, the technology has been studied, and the products have been widely used in the fields of agriculture, fishery, construction, industry and daily necessities. With cool cool, for example, recycling of waste styrofoam finely grated to add to the handcrafted cleaning paste, can be made of abrasive; waste thermoset plastic crushing, grinding into fine material, and then to 15%, 30% as a proportion of filler mixing to the new resin, the obtained product performance without significant change; waste soft polyurethane foam was broken into required size pieces, can be used as packaging buffer fill branch and carpet lining material; rough ground and leather plastic polyurethane vinegar exclusion mixture cat, continuous processing of a sheet; the waste plastic crushing, granulating can be used as raw material for ironmaking, to replace the traditional coke, can greatly reduce carbon dioxide emissions.

2 modification of waste plastics

Waste plastic recycling of the main advantages of simple process, low cost of reproduction, the disadvantage is to mechanical property of raw product decreased greatly, not making high-grade products. In order to improve the basic mechanical properties of waste plastic recycling material, meet the quality requirements of the special products, adopt all kinds of modification methods to modify the waste plastics, in order to achieve or exceed the performance of the original plastic products. There are 2 kinds of commonly used methods: one is physical modification, the other is chemical modification.

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